Does the adapter lock spin on the guitar strap peg?

The adapter fits snugly. It doesn’t spin loosely but can be spun into position by hand fairly easily and it will pretty much stay where you leave it. Doesn’t touch the body of the guitar. Well made item, recommended.

Will this work on a Yamaha A3 guitar?

If your Jack is metric, then yes. These devices Work on all A/E guitars that have a jack replacing the strap pin. Seller may know which model you need. If not Yamaha should or you could just unscrew the strap retainer nut go to a hardware store and find out the size.

expression system 1 taylor 814 ce circa 2004. Will this strap lock work??

I believe all you need to do in your case is change the strap button to the strap lock style.

Will this work with the new Schaller S lock system?

I don't know for sure but it probably will with some minor modification. I got it to work with my Dunlop locks but had to substitute the Dunlop receiver for the button that's on there. It's a really great solution for having a strap lock when your guitar's output cable is where the strap would normally go. It's also very solid.

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🎸 Lock in your groove, not your style!

PREMIUM BRASS BUILD - Solid brass construction ensures long-lasting strength and sleek black finish
ROCK SOLID SECURITY - Patent-pending Acousti-Lok locks your strap without permanent mods
LIGHTWEIGHT DISCREET - Only 35g—adds security without bulk or altering your guitar’s vibe
SEAMLESS COMPATIBILITY - Works flawlessly with Schaller-style strap locks (not included) for pro-level performance
UNIVERSAL FIT FOR PROS - Designed for standard 3/8" x 32 thread output jacks—perfect for most Martins & Taylors

The MusicNomad MN270 Acousti-Lok Strap Lock Adapter offers a secure, non-permanent solution to strap slippage for acoustic guitars with standard 3/8" x 32 thread output jacks. Crafted from solid brass with a sleek black finish, it’s compatible with most Martin guitars featuring Fishman electronics and Taylor guitars up to 2002. Designed for use with Schaller-style strap locks, it provides professional-grade security while maintaining your guitar’s original integrity.

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Brand	MusicNomad
Manufacturer	MusicNomad
Model	MN270
Model Name	MusicNomad Acousti-Lok Strap Lock Adapter for Standard Output Jacks for Acoustic Guitars (MN270)
Product Dimensions	9.53 x 8.89 x 2.54 cm; 35.43 g
Item model number	MN270
Number of items	1
Batteries Included	No
Batteries Required	No
Manufacturer	MusicNomad
Country of Origin	USA
Item Weight	35.4 g

MusicNomad Guitar Strap Locks (MN270)

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